Two bicycles at home At the same time the light ceases to attach, this is the cheapest two purchased. It works safely with a pon attachment, one has resistance to a slight rotation, and there is no problem in use. The color is still a photo and there is no discomfort. Because the fixing screw was normal, use lock nut that was originally attached. It is satisfactory enough.
Although it is sold at the nearby home center at about 2000 yen, this item is equivalent in both quality and performance, but I think that it is a product with excellent cost-effectiveness because it was able to purchase at a very low price.